New image of James Webb, another step taken

NASA has released details of the new phase of the James Webb Space Telescope mirror alignment process. As shown, the image taken is of a bright star in the center. The detail is incredible and there are discoveries in the image that scientists never expected to find.

According to the American special agency, the steps for aligning the mirrors have been completed. Many things will be revealed and could leave us in disbelief!

Nasa celebrated the new milestone reached with presentation of a photograph. The image shows a bright star with beautiful diffraction peaks against a background of several galaxies. Until now, since his placement at point L2located in the outer part of Earth's orbit along the line joining the Earth and the Sun, Webb is not yet ready for scheduled operations.

However, the scientists said they were excited about their performance so far and excited about what they will discover in due course.

According to the information, the objective was to focus only on the star 2MASS J17554042+6551277. Take advantage of its luminosity to feel its beautiful diffraction rays. However, the equipment proved to be so sensitive (and advanced) that it was also capable of photographing other stars (dots) and even galaxies (ovals), in the background, with clarity.

James Webb continues to calibrate to discover the universe

Currently, the Webb Telescope has also completed the alignment step. Specifically, this means that Webb's main imager, the near-infrared camera (NIRCAM), is fully aligned with its mirrors.

Now the team still needs to align other instruments on the telescope and hope to complete all optical alignments by early May. Then they will work on the preparation of scientific instruments.

The high-resolution images should then arrive this summer.

How was the image captured?

Some of the larger ground-based telescopes use segmented mirrors. However, James Webb is the first to use this technology in space. Its large primary mirror, 6.5 m in diameter, is fragmented into 18 hexagonal mirror parts made of solid beryllium - one of the strongest, most stable and most durable metals.

In its initial phase of work, called fine calibration, the telescope aimed to assess the alignment of these 18 segments. All had to be aligned as one, with the precision of a human hair, to produce a unified image of the same star.

As mentioned, the recording was made by NIRCam (Near Infrared Camera), an image capture technology that operates at infrared frequencies, invisible to the human eye.

The images captured, originally, are in black and white. The star and other celestial bodies are actually not red. For this result, NASA used a filter to increase the visual contrast.

Read also :

Add Comment